The correct answer is: a) Abstract expressionist style.
K.C.S. Paniker was a prominent figure in the Madras Art Movement, which was a movement of Indian artists who were influenced by Western art movements such as Abstract Expressionism. Paniker’s work is characterized by its use of bold colors and abstract forms, and he is considered to be one of the pioneers of Abstract Expressionism in India.
Option b) is incorrect because Paniker’s work is not characterized by its realistic depictions of rural life. His work is more abstract and expressionistic.
Option c) is incorrect because Paniker’s work is not characterized by its portraits of historical figures. His work is more abstract and expressionistic.
Option d) is incorrect because Paniker’s work is not characterized by its mythological-themed paintings. His work is more abstract and expressionistic.